AP5.9 bit amplifier is ideal to realize a two way front full active plus subwoofer system using

the fifth mono channel with 270 W @ 2 Ω. The built-in processor, that this amplifier shares with the AP8.9 bit,

provides the ability to assign the pre-outs to the AP4 D amplifier,

creating a very powerful system in a small space thanks to the “rack mounting” system.